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Anonymous Poster
bfox3303@suddenlink.net
Feb 6, 2007, 6:59 PM
Post #1 of 2
(1477 views)
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Cooling system problem
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About every three or four days this pickup pegs the temperature gauge at hot.
After that happens, I pull over, turn the truck off. Restart and drive on.
The gauge has returned to normal. The service engine soon light has come on but that is for engine overheat. Just before this occurs, the temperature gauge drops all the way down to cold, then a minute later it pegs out at hot. If the heater is on the air at the vent gets cold just before this happens. However, the problem will occur regardless of whether the heater is being used or not.
This has been regular as a clock. I get the pickup home and coolant is dripping off the frame below the coolant tank.
I have watched the coolant action while the truck is warming up in the driveway. As the engine starts to get warm the coolant rises in the tank. It pushes all the way to the top and pushes coolant out from under the cap. Then the thermostat opens and the level pulls down in the tank.
Since this has been happening, the pickup is on the third pressure cap and also the third thermostat. I also replaced the standard single core radiator with the heavy duty 2 core. No help.
It seems as if the engine has no coolant bypass.
This is a sealed system and has no actual over flow set-up.
Any idea's
Thanks a lot
Bob
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Guest
Anonymous Poster
harleydadcar@yahoo.com
Feb 7, 2007, 2:52 PM
Post #2 of 2
(1471 views)
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Re: Cooling system problem
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HAVE U CHECKED UR T-STAT BY PUTTING IT IN 200 DEGREE WATER TO SEE IF IT OPENS ALWAYS USE A GOOD 195 T-STAT AND I RECOMMEND STANT T-STATS AND NOTHING ELSE
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